Improve the UI of the loop mode

I have three points regarding the loop mode which will improve the function a lot IMHO:

1. Don't deselect the loop region after hitting the stop button when playing. Hitting the stop button in stopped mode deselects the loop which is the current behaviour. The loop can be restarted (from the beginning) with the play button when in stopped mode.

2. Don't deselect the loop region when tapping inside the loop region, only deselect when tapping outside or when the stop button is pressed. I often deselect when the start marker inside the region is not hit exactly (which is too easy IMHO)

3. A selected loop can also be started with the play button.

Thanks!

Good points!